MGFAX vs. MOSAX

Last updated Jun 3, 2026

MGFAX (MassMutual Global Fund) and MOSAX (MassMutual Overseas Fund) are both mutual funds - MGFAX is a Global Equities fund managed by MassMutual, while MOSAX is a Foreign Large Cap Equities fund managed by MassMutual. Over the past 10 years, MGFAX returned 12.11%/yr vs 8.27%/yr for MOSAX. Their correlation of 0.87 suggests significant overlap in exposure. MGFAX charges 1.41%/yr vs 1.34%/yr for MOSAX.

Performance

MGFAX vs. MOSAX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in MassMutual Global Fund (MGFAX) and MassMutual Overseas Fund (MOSAX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MGFAX achieves a 8.40% return, which is significantly higher than MOSAX's 2.34% return. Over the past 10 years, MGFAX has outperformed MOSAX with an annualized return of 12.11%, while MOSAX has yielded a comparatively lower 8.27% annualized return.

MGFAX

• 1D: 0.77%
• 1M: 6.21%
• YTD: 8.40%
• 6M: 8.28%
• 1Y: 20.41%
• 3Y*: 16.73%
• 5Y*: 7.39%
• 10Y*: 12.11%

MOSAX

• 1D: -0.23%
• 1M: 2.58%
• YTD: 2.34%
• 6M: 5.32%
• 1Y: 9.90%
• 3Y*: 10.44%
• 5Y*: 5.09%
• 10Y*: 8.27%

*Multi-year figures are annualized to reflect compound growth (CAGR)

MGFAX vs. MOSAX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
MGFAX MassMutual Global Fund	8.40%	14.37%	15.01%	33.87%	-32.08%	19.60%	27.18%	30.67%	-14.19%	35.30%
MOSAX MassMutual Overseas Fund	2.34%	25.48%	0.12%	18.26%	-15.35%	12.61%	8.51%	28.26%	-16.78%	26.44%

Correlation

The correlation between MGFAX and MOSAX is 0.73, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.73
Correlation (3Y) Calculated over the trailing 3-year period	0.73
Correlation (5Y) Calculated over the trailing 5-year period	0.77
Correlation (10Y) Calculated over the trailing 10-year period	0.80
Correlation (All Time) Calculated using the full available price history since Jan 3, 2005	0.87

The correlation between MGFAX and MOSAX shifts across timeframes, from 0.73 (3 years) to 0.87 (all time), reflecting how their relationship changes across market environments.

Return for Risk

MGFAX vs. MOSAX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

MGFAX

MGFAX Risk / Return Rank: 19
MGFAX Sharpe Ratio Rank: 22
MGFAX Sortino Ratio Rank: 21
MGFAX Omega Ratio Rank: 21
MGFAX Calmar Ratio Rank: 13
MGFAX Martin Ratio Rank: 17

MOSAX

MOSAX Risk / Return Rank: 9
MOSAX Sharpe Ratio Rank: 9
MOSAX Sortino Ratio Rank: 9
MOSAX Omega Ratio Rank: 9
MOSAX Calmar Ratio Rank: 9
MOSAX Martin Ratio Rank: 10

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

MGFAX vs. MOSAX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for MassMutual Global Fund (MGFAX) and MassMutual Overseas Fund (MOSAX). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	MGFAX	MOSAX	Difference
Sharpe ratio Return per unit of total volatility	1.35	0.76	+0.59
Sortino ratio Return per unit of downside risk	1.96	1.16	+0.80
Omega ratio Gain probability vs. loss probability	1.24	1.14	+0.10
Calmar ratio Return relative to maximum drawdown	1.29	0.92	+0.37
Martin ratio Return relative to average drawdown	4.82	3.17	+1.65
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MGFAX vs. MOSAX - Sharpe Ratio Comparison

The current MGFAX Sharpe Ratio is 1.35, which is higher than the MOSAX Sharpe Ratio of 0.76. The chart below compares the historical Sharpe Ratios of MGFAX and MOSAX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	MGFAX	MOSAX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.35	0.76	+0.59
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.22	0.29	-0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.44	0.46	-0.01
Sharpe Ratio (All Time) Calculated using the full available price history	0.32	0.28	+0.05

Drawdowns

MGFAX vs. MOSAX - Drawdown Comparison

The maximum MGFAX drawdown since its inception was -62.06%, which is greater than MOSAX's maximum drawdown of -58.43%. Use the drawdown chart below to compare losses from any high point for MGFAX and MOSAX.

Drawdown Indicators

	MGFAX	MOSAX	Difference
Max Drawdown Largest peak-to-trough decline	-62.06%	-58.43%	-3.63%
Max Drawdown (1Y) Largest decline over 1 year	-16.38%	-11.74%	-4.64%
Max Drawdown (3Y) Largest decline over 3 years	-23.61%	-14.43%	-9.18%
Max Drawdown (5Y) Largest decline over 5 years	-46.09%	-33.69%	-12.40%
Max Drawdown (10Y) Largest decline over 10 years	-46.09%	-36.75%	-9.34%
Current Drawdown Current decline from peak	0.00%	-2.13%	+2.13%
Average Drawdown Average peak-to-trough decline	-13.60%	-11.62%	-1.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.40%	3.42%	+0.98%

Volatility

MGFAX vs. MOSAX - Volatility Comparison

MassMutual Global Fund (MGFAX) and MassMutual Overseas Fund (MOSAX) have volatilities of 4.00% and 4.12%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MGFAX	MOSAX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.00%	4.12%	-0.12%
Volatility (6M) Calculated over the trailing 6-month period	12.80%	10.86%	+1.94%
Volatility (1Y) Calculated over the trailing 1-year period	15.94%	13.97%	+1.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.47%	17.67%	+15.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	27.57%	18.22%	+9.35%

MGFAX vs. MOSAX - Expense Ratio Comparison

MGFAX has a 1.41% expense ratio, which is higher than MOSAX's 1.34% expense ratio.

Dividends

MGFAX vs. MOSAX - Dividend Comparison

MGFAX's dividend yield for the trailing twelve months is around 40.28%, more than MOSAX's 17.79% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
MGFAX MassMutual Global Fund	40.28%	43.66%	16.85%	30.43%	28.11%	15.89%	5.05%	0.36%	27.78%	12.10%	3.75%	8.25%
MOSAX MassMutual Overseas Fund	17.79%	18.21%	6.02%	2.24%	9.26%	9.64%	1.78%	5.10%	12.16%	1.42%	1.71%	3.12%

Frequently Asked Questions

Can I hold both MGFAX and MOSAX in my portfolio?

MGFAX and MOSAX have a correlation of 0.73, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MGFAX or MOSAX?

MOSAX has higher volatility (4.12%) compared to MGFAX (4.00%). In terms of maximum drawdown, MGFAX dropped -62.06% vs MOSAX's -58.43%.

Which has better risk-adjusted returns?

MGFAX currently has the higher Sharpe Ratio (1.35 vs 0.76), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.